USN-5260-1: Samba vulnerabilities
1 February 2022
Several security issues were fixed in Samba.
Releases
Packages
- samba - SMB/CIFS file, print, and login server for Unix
Details
Orange Tsai discovered that the Samba vfs_fruit module incorrectly handled
certain memory operations. A remote attacker could use this issue to cause
Samba to crash, resulting in a denial of service, or possibly execute
arbitrary code as root. (CVE-2021-44142)
Michael Hanselmann discovered that Samba incorrectly created directories.
In certain configurations, a remote attacker could possibly create a
directory on the server outside of the shared directory. (CVE-2021-43566)
Kees van Vloten discovered that Samba incorrectly handled certain aliased
SPN checks. A remote attacker could possibly use this issue to impersonate
services. (CVE-2022-0336)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10
Ubuntu 20.04
This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.
References
Related notices
- USN-5260-2: winbind, libwbclient0, ctdb, libwbclient-dev, samba-common-bin, libpam-winbind, smbclient, libsmbclient-dev, samba-dsdb-modules, libsmbclient, libparse-pidl-perl, samba, samba-testsuite, samba-vfs-modules, samba-dev, libnss-winbind, samba-libs, registry-tools, samba-common, python-samba
- USN-5260-3: winbind, libwbclient0, ctdb, samba-doc, libwbclient-dev, samba-common-bin, libsmbsharemodes0, libpam-winbind, smbclient, libsmbclient-dev, samba-dsdb-modules, libsmbclient, libparse-pidl-perl, samba, samba-testsuite, libsmbsharemodes-dev, samba-vfs-modules, samba-dev, libnss-winbind, samba-libs, registry-tools, samba-common, libpam-smbpass, python-samba